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New Contributor
Posts: 1
Registered: ‎01-30-2013

Time exposures at Night?



I just purchased a Canon EOS Rebel T3 1100 D Camera and I would like to know if I can take time exposures.

I'm an Astronomer and I will be trying to take exposures of the sky at night.


Any help would be greatly appreciated!




Ed Murray

Respected Contributor
Posts: 1,076
Registered: ‎10-17-2012

Re: Time exposures at Night?


You would be able to use the EOS Rebel T3 to take night time exposures.  You simply set it up on a tripod, lock it in place and use the BULB setting while the camera is in Manual. 


This [the Bulb setting] will let you hold the shutter open as long as you wish.  To avoid camera shake you may want to use a remote to trigger the shutter, such as  RS-60E3.  If you are using an Image Stabilized lens, be sure to deactivate the IS function.

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New Contributor
Posts: 2
Registered: ‎02-03-2013

Re: Time exposures at Night?

The idea of a tripod is essential; About the expousure, you need to decide between expousure and the aperture of the diaphragm and make a kind of "perfect mix", in this way you could capture all the light... I think the only way to know it is to try a few times.

Occasional Contributor
Posts: 10
Registered: ‎11-13-2012

Re: Time exposures at Night?

The Two Hosers Photo Show just did a podcast on photographing star trails.  You might find it useful...

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